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IS
2007
15 years 6 months ago
Efficient processing of XPath queries using indexes
: A number of indexing techniques have been proposed in recent times for optimizing the queries on XML and other semistructured data models. Most of the semistructured models use t...
Sanjay Kumar Madria, Yan Chen, Kalpdrum Passi, Sou...
CORR
2011
Springer
171views Education» more  CORR 2011»
15 years 1 months ago
Persistent Robotic Tasks: Monitoring and Sweeping in Changing Environments
—We present controllers that enable mobile robots to persistently monitor or sweep a changing environment. The changing environment is modeled as a field which grows in location...
Stephen L. Smith, Mac Schwager, Daniela Rus
VR
2011
IEEE
224views Virtual Reality» more  VR 2011»
14 years 10 months ago
Velocity-dependent dynamic curvature gain for redirected walking
—Redirected walking (RDW) techniques allow people to walk in a larger virtual space than the physical extents of the laboratory. We describe two experiments conducted to investig...
Christian T. Neth, Jan L. Souman, David Engel, Uwe...
CIKM
2011
Springer
14 years 6 months ago
Estimating selectivity for joined RDF triple patterns
A fundamental problem related to RDF query processing is selectivity estimation, which is crucial to query optimization for determining a join order of RDF triple patterns. In thi...
Hai Huang 0003, Chengfei Liu
MOBIHOC
2006
ACM
16 years 6 months ago
Performance analysis of mobility-assisted routing
Traditionally, ad hoc networks have been viewed as a connected graph over which end-to-end routing paths had to be established. Mobility was considered a necessary evil that inval...
Thrasyvoulos Spyropoulos, Konstantinos Psounis, Ca...